Chapter Text
"Shouta? What are you asking i don't understand-"
"I want you to fuck me during the full moon Izuku, what can't you understand?"
Shouta just thinks it's logical, that's all.
The full moon and Shouta's heat happen to sync up and Shouta will be damned if he let his Alpha hide away and leave him alone for torturous hours just because Izuku becomes big and furry for a while.
Even if it means playing and acting on Izuku's poorly hidden desire to breed him full of pups, the walls around it breaking down as instincts take over while a big furry dog.
And you know what? Shouta is more then okay with that.
Now he just has to make Izuku understand that.
Izuku looks visibly taken back, stuttering and shuffling around in the doorway to their bedroom.
Shouta probably would have an easier time convincing his Alpha if he currently wasn't snuggled as deep and comfy as he could be on their bed, surrounded by blankets and clothes of all sorts that had Izuku's scent on them, his heat would be starting in a few hours and so would the full moon, the sun was already starting to go down and Izuku was already starting to get restless.
"But why? I could hurt you and-"
"Izuku, as endearing and appreciative as i am about that, i've wanted you to fuck me as a giant furry dog since i found out about you being a werewolf and accidentally seeing the sheer size of you down there, i want you to fuck me like a bloody animal and i've only been waiting until now to ask is because i know the slick i'd produce while being in heat would help a lot, and put whatever worries about you hurting me away." Shouta huffed, crossing his arms and giving a small put towards Izuku before snuggling a little deeper in his nest, his body was starting to heat up a little and he could feel the beginning of slick start to drip out of him already. It's only a little bit, his body just notifying him of his impending heat in 2 or 3 hours.
Shouta really was appreciative of Izuku's worry, anybody would after seeing just how big his Alpha was once he changed forms, but he's horny and impatient after waiting so long for his heat to sync up even a little bit with Izuku's full moons. He's going to take this chance even if he has to prod and poke Izuku until his heat starts.
Seeing that Izuku still looked uncertain, Shouta sighed, lifting a hand to rub at his right eye, scratching the scar slightly. "If it helps, i've been...practicing for it, i may not like using them very much but i've been using toys to help me adjust to the size of you. Working my way up in sizes until i could get as close as possible to the real thing, but since i don't actually know how big you are, nothing would have been extremely accurate." he mumbled, ducking his head slightly in embarrassment, his cheeks tinged with pink. Ever since he'd seen Izuku's length as a werewolf, he's been working up on stretching himself out with toys in his free time, slowly getting bigger and bigger in size. Shouta knows he can take the real thing now, even if he doesn't know how big Izuku actually is, he's ready for it and wants it.
Izuku's cheeks turn tomato red, spluttering again before going silent in contemplation, seeing Izuku take a quick look towards his wardrobe, where they both know Shouta stores his toys for when they want to play with them once in a while and then looking back at his curled up form on the bed.
"H-How big, exactly?" His Alpha's tone was nervous, stuttering but leaking confidence and lust.
Shouta gave a small grin, shrugging a little, "About..12? 13 inches? I don't know how big you are exactly but i'm roughly guessing around that area of size." Shouta hummed, saying it like the most casual thing in existence and like he just didn't admit to being able to take what most people can't.
"All the way?" Izuku was sounding more confident now, but his face said everything, his Alpha was still worried for him.
"All the way" Shouta confirmed.
It was quiet now, Shouta's body heating up some more while Izuku seemed to be fine, although his eyes seemed to focus in much more, his teeth a little sharper as the sun was slowly going down.
Shouta grinned in victory when Izuku gave him a slow, hesitant nod.
Shouta whimpered a little, wiggling around on the bed as he added a fourth finger into his slicked and stretched hole, he promised Izuku he'd stretch and prepare himself as much as he could while his Alpha transformed in the front room, it took Izuku a while to do so, so he's been alone in their bedroom for the past 30 minutes, uselessly pleasuring himself while he waited for Izuku to be fucking done turning into a giant dog.
His fingers felt good but it wasn't enough. Maybe he should have used one of the many dildo's he had to stretch himself instead but he couldn't be bothered to move from his nest, not anymore anyway. So Shouta was stuck using his fingers and possibly his whole fist if Izuku doesn't hurry the fuck up to stretch himself and keep him distracted.
Giving a quiet pant in effort, Shouta wiggled around some more until he was kneeling, his ass up in the air, legs spread and his chest pressed against the bed as he continued to finger himself with one hand and grip the bed sheets with the other. He felt so warm and hot and a dull ache throughout his whole being, he knew what he needed but he couldn't have it yet.
"Furry fuck better hurry up before i go to him" Shouta groaned, hips bucking up into his hand slightly as he poked his prostate, it felt good but not nearly as good as it would be once Izuku played with it. HIs fingers couldn't reach it very well but he tried his best to mess with it, mewling quietly in effort.
Just as Shouta was about to push his thumb in with the rest of his fingers, he heard multiple sniffs and a quiet growl from the doorway, a familiar if slightly different aroma starting to invade and mix with his, filling up the entire room with Cinnamon and Coffee, a combination of their scents.
A combination of Izuku's cinnamon and Shouta's coffee.
"Finally" Shouta whined, turning his head towards the door to see a massive 8ft werewolf, green fur covering it's entire body, just as fluffy as Izuku's hair is. Izuku wasn't one of those werewolves where he just turned into a normal looking wolf, albeit bigger, no. Izuku turned into a giant furry motherfucker that stood on two legs, still humanoid looking but also that of a wolf. Long muscled arms hanging down that could rip him in half, sharp claws in the place of nails, powerful legs that could snap his spine in a single kick, long muzzled snout and long fuzzy ears, long tail that could wrap around him and piercing green eyes watching him. Izuku didn't look powerful or very muscular because of just how fluffy he was, but Shouta knew the power hidden behind that fur.
Shouta couldn't stop himself from looking any longer, his eyes zeroing in on the fucking monstrosity hanging between Izuku's legs, already fully aroused and rock hard, dripping precum like no ones business as it slapped against Izuku's stomach, his werewolf and his Alpha stalking further into the room until he was right next to the bed, leaning down and sniffing at Shouta's hole that still had his fingers in. His slick practically covering his whole hand and running down his legs in copious amounts, pooling down onto the bed sheets.
Shouta shivered at the feeling of hot air against him, pulling out his fingers with a squelch. Shouta whimpered and mewled as Izuku didn't hesitate to take the chance and start lapping at the slick running down his legs, thick, long and rough tongue running over his sensitive and heated skin, getting higher and higher until he was lapping at his hole directly. Izuku's tongue licking around and on his twitching hole, making Shouta shiver and moan in want. He wanted that inside him dammit! The texture of the tongue was heavenly as it was dragged across his skin, his omega body quickly producing more and more lubricant the longer Izuku lapped it away.
"Izuku, please! Ah!" Shouta moaned, Izuku granting his wish without Shouta needing to say it. That thick tongue lapping a bit more around his hole before making it's way inside.
It felt so good! It was thick and long and rough, licking at his insides deeply. Shouta wiggled around and grinded back against it , pushing it even deeper inside. He whimpered, just how long was it? he had to have at least 5 or 6 inches of his tongue in alone!
Izuku lapped and licked everywhere he could reach inside Shouta, licking at his walls and against his prostate, the rough texture making him jolt forward before sinking back down on that wonderful muscle. Shouta's hands were fisting the sheets hard and his cock was weeping between his legs, having been left alone and ignored the entire time. Shouta had no plans of changing that now.
He could feel his legs and ass being absolutely drenched in his slick and Izuku's saliva, having nowhere else to go but mix with Shouta's juices as the beast ate him out like a starving animal who just came across a full meal.
If Shouta hadn't been prepped before, he sure was now.
He mewled and whined as Izuku pulled his tongue out, a loud squelch echoing in the room as the long muscle was pulled out entirely, a line of saliver and slick connecting the two until it broke. Giant green paw like hands raised up and cupped his cheeks, pulling them apart as far as they would go as his Alpha stared at his spread ass, hole gaping and twitching slightly from the cold air of the room and how suddenly empty Shouta felt.
He needs something.
Anything.
Just fill him up, please!
A quiet growl came from behind him as a weight suddenly crawled up onto the bed, the springs squeaking at the sudden and heavy weight. Shouta couldn't help his needy whine and sticking his ass out further into the air as he realised Izuku was crawling onto the bed, crawling up over him as two giant arms settled on either side of his head, a furry and very fluffy stomach pressing against his sweaty and flushed back, two powerful legs pressing against his spread thighs and a very heavy, slick, warm and hard thing pressing down against the inside of his cheeks, sliding over his hole and causing him to moan quietly.
He knew what was happening instantly, even in his heat clouded mind.
Izuku was mounting him.
And the underside of his giant cock was sliding over his hole repeatably.
It felt big, much bigger then he thought it would be.
Shouta couldn't even tell where it started or ended, it felt like an endless slide against his slick and gaping hole.
He wanted it inside him.
"Izuku" Shouta whined, letting go of the sheets to grab at Izuku's big furry wrist next to his head with one hand, gripping it tightly even when Izuku growled a warning besides his ear, a warning to stay still.
He could feel Izuku rutting against his back and between his ass cheeks, covering his back in precum, Shouta was about to reach back with his hand hand to line Izuku up but it wasn't needed. Because as soon as that thought crossed his mind he felt the tip of Izuku's cock against his hole, quickly relaxing as much as he could Shouta keened loudly as he felt a push and something pop inside of him. Izuku's tip successfully breaching him before the rest was suddenly pushed inside, making Shouta do more then keen.
He fucking howled.
Luckily Izuku stayed still after shoving his entire length inside in one thrust, the amount of slick, saliva, sweat and precum covering him and his hole helping immensely but still!
It felt so good and yet it burned. It burned so good!
How big was Izuku? he was fucking longer then 12 inches that's for sure, his hand that wasn't gripping Izuku's wrist like a lifeline reached down to his stomach hastily and he whimpered at what he felt. He had a fucking stomach bulge! It went from his abdomen to the bottom of his fucking ribcage, how was that possible? it shouldn't be but he felt nothing but pleasure, burning white hot pleasure at how full he felt, Izuku's cock must be at least 14 inches, maybe 13? he didn't know, he was too out of his mind, the pleasure just too good to concentrate on anything but the glorious stretch.
Shouta must be stretched to his limit, his hole felt so fucking stretched he briefly wondered how he didn't tear or feel more pain? He didn't dwell on it for long though, as Izuku quickly started giving small little bucks, not moving very much but just enough to give stimulation.
Just that small movement made fireworks erupt all over him, Shouta's mouth opening wide into the sheets as he panted harshly, he was aware he was drooling but not aware enough to do anything about it. His hand was still on his stomach, feeling the slight movements of the cock inside him and it just made everything so much better!
"M..More~" He keened, out of breath and barely able to talk but he wanted Izuku to move more, give him more, anything to make him lose his mind.
A growl above him signaled that Izuku heard him and started rutting more, pulling back some more before shoving his length back inside, his heavy balls slapping against his thighs and making Shouta whimper and mewl, he could feel his stomach slightly dip when Izuku pulls back only to fill up and distend again once he thrust in, it felt so gooooood.
His body was rapidly producing more slick to help, the lube like substance squelching out around the rim of the cock currently plowing him, precum following in it's path. Shouta hadn't realised, but he must have cum when Izuku shoved himself inside the first time, considering there was a white patch of cum underneath his stomach. He must have become hard again instantly though, painfully hard, which didn't surprise him since he was in heat.
Another thrust pulled him out of his thoughts, making Shouta whine and mewl again. He doesn't know if he can handle anymore of this, his mouth hanging open as he drooled onto the bed sheets, panting like he can't breath and his eyes close to rolling back into his head, he had no doubt he'd just lose himself completely if Izuku went harder.
"B-Breed"
"H..Huh?" Shouta panted, barely able to tilt his head enough to see Izuku change his position slightly, muscles getting tenser and getting lower as he lowered himself further down to the bed, practically crushing Shouta underneath him and into the bed,Shouta shivered at the feeling of being almost completely crushed, the heavy weight on his back keeping his upper body pinned while his bottom half was barely kept in the air, the only thing stopping him from completely laying down on top of him was Izuku's legs, which felt like they moved higher up the bed.
Like he was about to..
"Izuku wait AAAH!"
Too late.
Izuku had changed positions so he could fuck into Shouta harder, faster and stronger. The position giving him a better angle to pierce into Shouta's insides like a battering ram, his weight keeping Shouta pinned and unable to do anything apart from moan, whimper, howl and keen.
Shouta could barely move, hands barely having the strength to grip the bed sheets and nearly tearing them with both nails and his teeth, although his clenched mouth didn't last long, quickly opening slack jawed as Shouta panted like a man out of breath as he was completely plowed.
His stomach going up and down rapidly, showing just how deep and fast Izuku was going inside him, his insides were going to be fucked after this.
Literally and figuratively.
Izuku wasn't holding anything back, but he wasn't completely unaffected either. Loud whimpers and pants were heard above Shouta as he had the life fucked out of him, Izuku must have ran out of patience and really was fucking him like an animal.
Just like Shouta wanted.
"Fuck..Fuck" Shouta panted, eyes actually rolling back into his head now. His body felt like bombs were going off inside him, fireworks erupting in his insides as he came again, covering the bed and his stomach in his cum, but he was still rock hard, his cock weeping and a deep red. Shouta was decently sized for an Omega, but compared to Izuku right now? he was tiny.
"Breed, breed mate, need to breed"
Oh fuck yes.
"Fuck...yes, breed me, breed me breed me breed me!" Shouta wailed, body shaking now at the overwhelming pleasure as Izuku somehow started going faster. Jack hammering into Shouta, if i wasn't for the weight on his back, he had no doubt he'd be pushed up the bed at the sheer force of the thrusts, but instead only the slap of their bodies hitting and his legs and hips being pushed up before falling back down to the bed were the only evidence of how powerful Izuku was plowing him at. When you literally push your mates bottom half off the bed slightly at the force then you know you're fucked.
And Shouta feels fucked.
"Please, breed me! Breed me! Fuck me full of pups! I wanna be pumped full of pups! Only your pups! please Alpha!" Shouta continued to wail, breathless and fucked out of his mind, his only thought was breed me breed me breed me.
Shouta felt himself let out another load onto the sheets and himself, but at this point he didn't care how many orgasms were fucked out of him, he was barely able to concentrate on the pounding of his insides as is, he had no attention span for his own pleasure.
"Please cum Alpha! Cum inside me! Fill me up nice and round and fill me with your pups! put a fucking litter in me please! I want it so bad!" He sobbed, tears now cascading down his face and causing his vision to go blurry, he was being so fucked out of his mind his dry eye didn't even stop the tears from leaking out.
Izuku growled and panted above him, trying to fuck impossibly deeper into him at his pleasure filled words, Fucking so deep into him the beginnings of his knot popping inside before being pulled out.
Wait.
His knot.
Shouta sobbed, his body was practically limp apart from his ass in the air, being kept in the air by Izuku's cock alone, how was his knot gonna fit? it was no doubt massive but Shouta was already stretched to his limits, he can't possibly take it can he?
Apparently, his body thought so, because it was producing slick in overtime, practically gushing out his hole, lubing the way and somehow making him even more loose. He was going to take that knot whether he was able too or not and Shouta couldn't find it in himself to complain, too fucked out of his brain to run away.
Instead, he used the last of his strength to grind back against the cock, trying to push that quickly building knot inside him.
It worked.
Because it popped inside and didn't leave, his body holding onto it tightly as it quickly inflated to it's maximum size, Shouta howled alongside Izuku, human and wolf howls mixing as a quickly flowing warmth gushed inside him, Izuku's cock pulsing and twitching as it unloaded load after load after load inside Shouta.
"Yes yes yes, fill me, fill me up with cum! Breed me like the bitch i am! Alpha!" Shouta literally screamed, voice gruff and hoarse from overuse, mouth hanging open as his tongue rolled out in a silent scream, it felt so good! he was being pumped full!
He could feel the warm cum gushing inside him, filling him up, his hand barely raised to feel his stomach, he moaned and whimpered at the feeling, inside and out as his stomach got bigger.
And bigger.
And bigger.
And bigger.
Having nowhere else to go but inside, the knot keeping everything tightly plugged. The cum had nowhere to go but his stomach, making it bloat and bloat and bloat.
Izuku had to roll them onto their sides, spooning Shouta from behind as his knot kept them tightly locked, just so Shouta didn't hurt himself from how bloated his stomach was getting, if he stayed pinned on his front against the bed, his stomach wouldn't have been able to get any bigger and it would have had to come out somewhere else.
Lying on his side, shaking and practically fucked out his mind as Izuku continued to pump him full of cum, it slowing down the longer they stayed there. Shouta couldn't help but notice he already looked full term with a full litter, stomach so big he looked 9 months pregnant.
His hands shakily reached to lazily caress his skin, mewling quietly at the feeling of the taut skin. Shouta was barely aware enough to notice two furry hands joining him, laying warm palms soothingly on his stomach.
HIs heat was doused, the cum cooling the heat and making Shouta realised how fucking exhausted he is, he couldn't really move or do anything. Too weak in mind and body, but luckily he had his Alpha to help him, a giant green muzzle leaning down to gently lap at his neck and shoulders, soothing him into a restful sleep.
Shouta was warm, sated and full of cum that kept slowly adding more.
As he started to drift off, deep purrs rumbling behind him.
Shouta couldn't help but admit he'll hopefully be able to do this again and that in the next coming months that'll he'll be full of pups, just like they wanted.